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Determining a structured spatio-temporal representation of video content for efficient visualization and indexing

  • Marc Gelgon
  • Patrick Bouthemy
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1406)

Abstract

Efficient access to information contained in video databases implies that a structured representation of the content of the video is built beforehand. This paper describes an approach in this direction, targeted at video indexing and browsing. Exploiting a 2D motion model estimator, we partition the video into shots, characterize camera motion, extract and track mobile objects. These steps rely on robust motion estimation, statistical tests and contextual statistical labeling. The content of each shot can then be viewed on a synoptic frame composed of a mosaic image of the background scene, on which trajectories of mobile objects are superimposed. The proposed method also provides instantaneous and long-term, qualitative and quantitative object motion cues for content-based indexing. Its different steps and the system they form are designed to keep computational cost low, while being able to cope with general video content was aimed at. We provide experimental results on real-world sequences. The structured output opens important possible extensions, for instance in the direction of higher-level interpretation.

Keywords

Motion Model Camera Motion Mobile Object Mosaic Image Video Database 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • Marc Gelgon
    • 1
  • Patrick Bouthemy
    • 1
  1. 1.IRISA/INRIARennes cedexFrance

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